US4686408A - Curvilinear array of ultrasonic transducers - Google Patents

Curvilinear array of ultrasonic transducers Download PDF

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Publication number
US4686408A
US4686408A US06930993 US93099386A US4686408A US 4686408 A US4686408 A US 4686408A US 06930993 US06930993 US 06930993 US 93099386 A US93099386 A US 93099386A US 4686408 A US4686408 A US 4686408A
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Prior art keywords
plate
elements
transducer
array
backing
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Expired - Fee Related
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US06930993
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Kazufumi Ishiyama
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Toshiba Corp
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Toshiba Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezo-electric effect or with electrostriction
    • B06B1/0607Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezo-electric effect or with electrostriction using multiple elements
    • B06B1/0622Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezo-electric effect or with electrostriction using multiple elements on one surface
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18Methods or devices for transmitting, conducting, or directing sound
    • G10K11/26Sound-focusing or directing, e.g. scanning
    • G10K11/32Sound-focusing or directing, e.g. scanning characterised by the shape of the source
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/42Piezoelectric device making

Abstract

A curvilinear array of ultrasonic transducers primarily for use in a medical diagnostic apparatus by which divergent ultrasonic beams are transmitted without resorting to sector scanning techniques to steer the ultrasonic beam. The curvilinear array of ultrasonic transducers includes a flexible transducer assembly bonded to a curvilinear surface of backing base. The flexible transducer assembly includes a flexible backing plate and an array of ultrasonic transducers elements disposed on the flexible backing. The array is formed of a transducer plate having grooves cut through to the flexible backing plate to isolate the transducer elements.

Description

This application is a continuation of application Ser. No. 679,058, filed Dec. 6, 1984, now abandoned.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to an array of ultrasonic transducers for use in a medical imaging apparatus. More specifically, the invention relates to a curvilinear, i.e., convex or concave, array of ultrasonic transducer elements which performs sector scanning of ultrasonic beams.

2. Description of the Prior Art

An array of ultrasonic transducers is used in a ultrasonic apparatus to observe the internal organs of a patient. Such an apparatus provides successive images at a rapid rate, in "real time", such that an observer can see movements of continuous motion.

A curvilinear array of ultrasonic transducers is disclosed in, for example, U.S. Pat. Nos. 4,344,327; 4,409,982; and 4,281,550. The former two patents disclose convex arrays and the letter patent discloses a concave array.

An advantage of these curvilinear arrays is the ability to perform sector scanning without a need for electronic sector scanning techniques to steer the ultrasonic beams over a large angle. In electronic sector scanning, plural ultrasonic transducer elements are linearly arrayed on a common plane. All the elements are excited at a different timing relation to phase the wave fronts of the respective ultrasonic waves to define a steered beam direction. But such excitation is liable to generate a side-lobe beam in addition to the main beam. The side-lobe beam gives the image an artifact because information obtained by the side-lobe beam is also interpreted as that of the main beam.

The curvilinear array of transducer elements performs the sector scanning of ultrasonic beams without exciting the transducer elements with different timing relations. Thus, an ultrasonic imaging apparatus using the curvilinear array does not need delay time circuits to give elements different timing relations to steer beams. Further, it provides a wider viewed image at more distant regions than obtained with conventional electric linear scanning.

It is, however, more difficult to assemble the curvilinear array relative to that of the non-curved, linear array because the piezoelectric ceramic plate for the ultrasonic transducer is rigid and is not itself flexible.

Therefore, a curved piezoelectric ceramic plate is fabricated by grinding a block of piezoelectric ceramic in a desired curvilinear shape. The thickness of the plate forming the array is about 0.3 mm to transmit 5 MHz ultrasonic beams. So it is not easy to grind the block to produce such a thin curved piezoelectric ceramic plate, especially of small radius. It is also difficult to divide the curved ceramic plate into the plural elements as compared with a non-curved one.

U.S. Pat. No. 4,281,550 discloses a concave array, wherein copper electrodes are bonded to the front and rear major surfaces of the plate with a silver bearing epoxy resin. A flexible matching window (layer) is then cast directly on the front electrode. A series of paralleled grooves are then cut through the rear electrode. The grooved ceramic plate is formed around a semi-cylindrical mandrel by cracking via each groove to produce a curved array of separate, electroded transducer elements.

But the fabrication shown in U.S. Pat. No. 4,281,550 is limited to a concave array because the grooved array can not be bent towards the grooved surface.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide a concave or convex linear array of ultrasonic transducers whose radius is not limited.

It is another object of the present invention to provide a concave or convex linear array of a simple fabrication without need for a curvilinear piezoelectric ceramic plate.

In accordance with this invention, a non-curved transducer plate is bonded to a thin flexible backing plate. The transducer plate is diced through to the backing plate and divided into series of parallel transducer elements. The backing plate having the paralleled transducer elements mounted thereon is then conformed to another concave or convex curved backing base.

In accordance with this invention, a flexible printed circuit (FPC) board which has lead wire patterns to supply drive pulses to individual elements and to acquire from the respective elements return signals is connected to one edge of the transducer plate prior to cutting of the transducer plate. The connection part of the FPC board and the transducer plate is cut to bend the flexible backing plate on which the transducer elements are mounted to isolate the transducer elements. Several slits are then cut to divide the FPC board into several groups. Opposite ends of the FPC board groups not connected to the transducer elements are connected to a respective connector part. All groups of the slited FPC board are bent near the connection part at a right angle.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete appreciation of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein:

FIG. 1 is a side view of a curvilinear array of ultrasonic transducers of the present invention;

FIG. 2 is a top view illustrating a stage in the production of the array of FIG. 1;

FIG. 3 is a cross-sectional view along line A-A' of FIG. 2; and

FIG. 4a and 4b are enlarged cross-sectional views illustrating a stage in the production of the array of FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring now to the drawings, wherein like reference numerals designate identical or corresponding parts throughout the several views, and more particularly to FIG. 1 thereof, shown therein is a convex array of ultrasonic transducers in accordance with the teachings of the present invention. A semicylindrical backing base 3 which absorbs ultrasonic waves is made of a ferrite rubber whose acoustic impedance is about 5.2×106 kg/m2 sec. Bent along the semi-cylindrical surface of the backing base 3 is a backing plate 2 which has the same acoustic impedance and is made of the same material as the backing base 3. Plate 2 adheres to the backing base 3 by means of an adhesive layer 1 like a epoxy resin containing heavy metal powder for example, ferrite, zinc and so on, to match the acoustic impedance of the adhesive layer 1 with the backing base 3 and the backing plate 2. This matching of the acoustic impedance contributes to preventing ultrasonic wave propagating towards the backing base 3 from being reflected at such a connection layer.

A large number such as e.g., 128, divided transducer elements 4 are mounted on the backing plate 2. One edge of each transducer element is connected to a terminal of a respective lead line L formed on FPC boards 5a-5f. The FPC boards have, for example, 8 to 22 lead lines L thereon. The opposite terminals of the lead lines L on FPC boards 5a-5f have connection parts 6b-6f with respective connecting leads (not shown). Drive pulses to excite the transducer elements 2 and return signals received thereby are communicated through these lead lines L.

In the same way as connections are made by means of the FPC boards 5a-5f, ground lines (not shown) are commonly connected to the other edges of transducer elements 4. The drive pulses are supplied to the elements 4 from the electrode lines L through the ground electrode lines.

On the surface of the elements 4 are mounted first matching layers 7 which are divided with the elements 4. The first matching layers 7 are made of, for example, alumina epoxy resin with a thickness of about 0.14 mm at 5 MHz. A second matching layer (not shown), like a polyester film, is provided covering over the surfaces of these first matching layers 7. The thickness of the second matching layer is about 0.10 mm at 5 MHz. These first and second matching layers compensate for a great difference of acoustic impedance between the transducer elements and a patient so as to avoid reflection in a connection area between the patient and the transducer elements.

Further, a semi-cylindrical acoustic lens (not shown), which is curved orthogonal to the array direction of the transducer elements 4, is mounted on the second matching layer to focus ultrasonic beams in a direction perpendicular to the array direction.

The operating of this convex transducer array of the present embodiment is similar to conventional electrical linear scanning. A plurality of adjacent elements are excited to transmit ultrasonic beams and receive the resulting return echoes. These excited elements in the array are incrementally shifted along the convex array, one element at a time to effect scanning. A well known electronic ultrasonic beam focussing is useful for focussing beams in the array direction to compensate for the divergence of beams where excited transducer elements are positioned on the convex array.

FIGS. 2 and 3 illustrate first steps in a preferred method for manufacturing the transducer array. The array is formed from a single plate 21 of piezoelectric ceramic whose thickness is about 0.3 mm at a 4 MHz ultrasonic wave.

Electrode layers 31, 32 are bonded to the front and rear surfaces of the plate 21 as shown in FIG. 3. The rear electrode layer 32 and the front electrode layer 31 are dimensioned and arranged on the plate 21 so as to define an exciting region B located symmetrically to the center of the plate 21. An edge of rear electrode 32 is soldered to the lead lines L of the FPC board 5. A part of front electrode 31 extends around the plate 21 to the rear surface and is soldered to the ground lines E on another FPC board 27.

The flexible backing plate 2 is bonded to the rear electrode 32. The thickness of the flexible backing plate 2 is about 1.2 mm in this embodiment. The flexible backing plate 2 is required to be thin enough to prevent it from warping, except for the curvilinear surface of the backing base 3. Also it is required to be thick enough not to be cut through completely when the piezoelectric ceramic plate 21 is diced to produce the array of transducer elements.

The first matching layer 7 is bonded to the front electrode 31. The first matching layer 7 usually has higher acoustic impedance than the second matching layer and the patient, and less than that of the piezoelectric ceramic of plate 21. The first matching layer 7 is more rigid than the second matching layer. Dividing the first matching layer in addition to dividing the elements increases isolation and decreases crosstalk between the elements. Thus, a vibration excited in a transducer element does not propagate to an adjacent transducer element through the first matching layer 7. The second matching layer which covers over the first matching layer 7 is elastic enough to absorb such a vibration.

In the second step of manufacturing, the matching layer and the plate 21 of piezoelectric ceramic are cut between lead lines L through till the flexible backing plate 3. For example, 64 to 128 transducer elements 2 are thereby produced. The edges of transducer elements 4 are connected respectively to lead line L and common ground line E.

In a preferred embodiment, each transducer element is divided into a plurality of sub-elements which are electrically connected in common.

FIGS. 4a and 4b illustrates this preferred embodiment. The transducer assembly assembled by the first steps, as shown in FIGS. 2 and 3, is temporarily fixed to a rigid base (not shown) which is as wide as the piezoelectric ceramic of plate 21. Both FPC boards are bent at right angle around the connection parts to the plate 21. Then, a diamond saw is used to cut the piezoelectric ceramic of plate 21 over the first matching layer 7, as shown in FIGS. 4a and 4b. The diamond saw alternately makes 0.6 mm and 0.2 mm depth grooves in the flexible backing plate 3 and FPC boards 5,27. The deeper (0.6 mm) grooves between the adjacent elements 2 or the adjacent lead lines L divide the piezoelectric ceramic of plate 21 sandwiched between the electrode layers 31 and 32 to produce the transducer elements. The other grooves between the deeper grooves produce the transducer sub-elements. The two sub-elements from the one element are electrically connected to the identical lead line L as shown in FIG. 4a. These grooves, however, do not produce electrical isolation of the ground line E as shown in FIG. 4b.

The crosstalk between the elements through the flexible backing plate 3 is reduced by the grooves between sub-elements. Further, the flexible backing plate 3 becomes more flexible due to these grooves.

The backing plate 2 bonded thereto the rigid ceramic plate 21 becomes flexible by cutting and dividing of the ceramic plate 21. The so-processed flexible plate 21 bonding transducer elements 4 can then be shaped in convex or concave form.

The FPO boards on which lead lines L and ground lines E are formed are divided into the several slips to 5a-5f and 9a-9f. The tips of slips 5a-5f and 9a-9f are divergent as shown in FIG. 2 to bind them easily after they are turned back as shown in FIG. 1. The width of each of slips 5a-5f and 9a-9f becomes narrow when the radius of the curvilinear is small.

In the third step of this manufacturing method, this flexible backing plate 2 is bonded to the curved surface of the convex backing base 3 with the epoxy resin 1. A muddy ferrite rubber may be directly cast into the convex plate 21 to form the convex backing base 3 instead of using the epoxy resin 1.

In the fourth step of this manufacturing method, the second matching layer (not shown) and acoustic lens are mounted on the first matching layer 7.

According to this method of manufacturing, a convex array of transducer elements having a small radius, e.g., about 25 mm, can be provided.

These steps are also applicable to a concave array of ultrasonic transducer elements. In the concave array, the backing base 3 has a concave surface instead of a convex surface. The grooves are as wide as the tops of elements so that the elements do not contact.

Obviously, numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.

Claims (5)

What is claimed as new and desired to be secured by Letters Patent of the United States is:
1. A convex array of ultrasonic transducers, comprising:
a base having a convex surface; and,
a flexible transducer assembly bonded to the convex surface of said base, including,
a flexible backing plate bent around said convex surface of said base and having an acoustic impedance the same as that of said base, said flexible backing plate having opposed sides, one of which is bonded to the convex surface of said base with an epoxy resin containing heavy metal powder to match the acoustic impedance of said base to said backing plate, and
an array of ultrasonic transducer elements disposed on the other side of said flexible backing plate, said array of transducer elements comprising a piezoelectric ceramic plate having opposed sides, electrode layers provided on the opposed sides of said piezoelectric ceramic plate, and a matching layer formed on a selected of said electrode layers, said array having grooves cut through said piezeolectric ceramic plate, said electrode layers, said matching layer and a portion of the flexible backing plate to define individual transducer elements and to isolate said individual transducer elements, and
a plurality of flexible printed circuit boards having electrical lead patterns sandwiched between said piezoelectric plate and said flexible backing plate and connected to respective of said transducer elements to supply drive pulses to said respective transducer elements.
2. The convex array according to claim 1 wherein said matching layer comprise:
alumina epoxy resin.
3. The convex array according to claim 1, comprising:
said flexible printed circuit boards having grooves cut therethrough in correspondence with the grooves defining said transducer elements, to separate said lead patterns in correspondence with said respective transducer elements.
4. The convex array according to claim 1, wherein said flexible printed circuit boards have divergent tips which are bent around sides of said base such that the divergent tips are gathered and aligned parallel to a common line.
5. The convex array according to claim 3, wherein said flexible printed circuit boards have divergent tips which are bent around sides of said base such that the divergent tips are gathered and aligned parallel to a common line.
US06930993 1983-12-08 1986-11-14 Curvilinear array of ultrasonic transducers Expired - Fee Related US4686408A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP58-230670 1983-12-08
JP23067083A JPS60124199A (en) 1983-12-08 1983-12-08 Ultrasonic probe
JP59-114638 1984-06-06
JP11463884A JPH0611259B2 (en) 1984-06-06 1984-06-06 Ultrasonic pro - Bed and manufacturing method thereof

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Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800317A (en) * 1986-08-11 1989-01-24 Medasonics, Inc. Ultrasonic transducer method and apparatus
US5030874A (en) * 1985-05-20 1991-07-09 Matsushita Electric Industrial Co., Ltd. Ultrasonic probe
US5119801A (en) * 1988-02-04 1992-06-09 Dornier Medizintechnik Gmbh Piezoelectric shock wave generator
US5126616A (en) * 1989-09-05 1992-06-30 Pacesetter Infusion, Ltd. Ultrasonic transducer electrical interface assembly
US5592730A (en) * 1994-07-29 1997-01-14 Hewlett-Packard Company Method for fabricating a Z-axis conductive backing layer for acoustic transducers using etched leadframes
US5610602A (en) * 1992-08-18 1997-03-11 Kinesis Corporation Keyboard and method for producing
US5657295A (en) * 1995-11-29 1997-08-12 Acuson Corporation Ultrasonic transducer with adjustable elevational aperture and methods for using same
US5673040A (en) * 1991-04-10 1997-09-30 Kinesis Corporation Ergonomic keyboard apparatus
US5685311A (en) * 1994-10-20 1997-11-11 Olympus Optical Company, Ltd. Image display system
US5689253A (en) * 1991-04-10 1997-11-18 Kinesis Corporation Ergonomic keyboard apparatus
US5711058A (en) * 1994-11-21 1998-01-27 General Electric Company Method for manufacturing transducer assembly with curved transducer array
US5792058A (en) * 1993-09-07 1998-08-11 Acuson Corporation Broadband phased array transducer with wide bandwidth, high sensitivity and reduced cross-talk and method for manufacture thereof
US5834687A (en) * 1995-06-07 1998-11-10 Acuson Corporation Coupling of acoustic window and lens for medical ultrasound transducers
US5931684A (en) * 1997-09-19 1999-08-03 Hewlett-Packard Company Compact electrical connections for ultrasonic transducers
US5977691A (en) * 1998-02-10 1999-11-02 Hewlett-Packard Company Element interconnections for multiple aperture transducers
US5984871A (en) * 1997-08-12 1999-11-16 Boston Scientific Technologies, Inc. Ultrasound transducer with extended focus
US5990598A (en) * 1997-09-23 1999-11-23 Hewlett-Packard Company Segment connections for multiple elevation transducers
US6057632A (en) * 1998-06-09 2000-05-02 Acuson Corporation Frequency and bandwidth controlled ultrasound transducer
US6100626A (en) * 1994-11-23 2000-08-08 General Electric Company System for connecting a transducer array to a coaxial cable in an ultrasound probe
US6155982A (en) * 1999-04-09 2000-12-05 Hunt; Thomas J Multiple sub-array transducer for improved data acquisition in ultrasonic imaging systems
EP0853919A3 (en) * 1997-01-08 2001-05-09 Endosonics Corporation A high resolution intravascular ultrasound transducer assembly having a flexible substrate and method for manufacture thereof
US6563101B1 (en) 2000-01-19 2003-05-13 Barclay J. Tullis Non-rectilinear sensor arrays for tracking an image
US6894425B1 (en) * 1999-03-31 2005-05-17 Koninklijke Philips Electronics N.V. Two-dimensional ultrasound phased array transducer
US20070157732A1 (en) * 2006-01-06 2007-07-12 Warren Lee Transducer assembly with z-axis interconnect
US20080106976A1 (en) * 2005-01-11 2008-05-08 Koninklijke Philips Electronics, N.V. Redistribution Interconnect for Microbeamforming(S) and a Medical Ultrasound System
US20090095087A1 (en) * 2006-04-05 2009-04-16 Masaki Yamano Ultrasonic probe, ultrasonic flaw detection method, and ultrasonic flaw detection apparatus
US20100256488A1 (en) * 2007-09-27 2010-10-07 University Of Southern California High frequency ultrasonic convex array transducers and tissue imaging
USRE43485E1 (en) 2007-11-27 2012-06-26 Kinesis Corporation Keyboard
CN103211619A (en) * 2012-01-24 2013-07-24 株式会社东芝 Ultrasound probe and ultrasound diagnosis apparatus

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607592B1 (en) * 1986-11-28 1990-03-30 Thomson Csf Echograph probe has piezo-electric arrangement
FR2607590B1 (en) * 1986-11-28 1989-09-08 Thomson Cgr Echograph probe with perfect connection circuit
JPS63207300A (en) * 1987-02-24 1988-08-26 Toshiba Corp Ultrasonic probe
JP2502685B2 (en) * 1988-06-15 1996-05-29 松下電器産業株式会社 Method of manufacturing the ultrasonic probe
JPH02234600A (en) * 1989-03-07 1990-09-17 Mitsubishi Mining & Cement Co Ltd Piezoelectric conversion element
US5041315A (en) * 1989-05-15 1991-08-20 Zircoa Inc. Flexible ceramic member and method of production thereof
US5044053A (en) * 1990-05-21 1991-09-03 Acoustic Imaging Technologies Corporation Method of manufacturing a curved array ultrasonic transducer assembly
US5423220A (en) * 1993-01-29 1995-06-13 Parallel Design Ultrasonic transducer array and manufacturing method thereof
US5453575A (en) * 1993-02-01 1995-09-26 Endosonics Corporation Apparatus and method for detecting blood flow in intravascular ultrasonic imaging
US5410208A (en) * 1993-04-12 1995-04-25 Acuson Corporation Ultrasound transducers with reduced sidelobes and method for manufacture thereof
US5415175A (en) * 1993-09-07 1995-05-16 Acuson Corporation Broadband phased array transducer design with frequency controlled two dimension capability and methods for manufacture thereof
US5743855A (en) * 1995-03-03 1998-04-28 Acuson Corporation Broadband phased array transducer design with frequency controlled two dimension capability and methods for manufacture thereof
CA2129946C (en) * 1993-09-07 1998-09-29 Amin M. Hanafy Broadband phased array transducer design with frequency controlled two dimension capability and methods for manufacture thereof
DE69516444T2 (en) 1994-03-11 2001-01-04 Intravascular Res Ltd Ultrasonic transducer arrangement and method for its production
US5655538A (en) * 1995-06-19 1997-08-12 General Electric Company Ultrasonic phased array transducer with an ultralow impedance backfill and a method for making
FR2740933B1 (en) * 1995-11-03 1997-11-28 Thomson Csf Acoustic probe and method of realization
US7226417B1 (en) * 1995-12-26 2007-06-05 Volcano Corporation High resolution intravascular ultrasound transducer assembly having a flexible substrate
US5680863A (en) * 1996-05-30 1997-10-28 Acuson Corporation Flexible ultrasonic transducers and related systems
US5735282A (en) * 1996-05-30 1998-04-07 Acuson Corporation Flexible ultrasonic transducers and related systems
US6066097A (en) * 1997-10-22 2000-05-23 Florida Atlantic University Two dimensional ultrasonic scanning system and method
US6052608A (en) * 1998-03-30 2000-04-18 Johnson & Johnson Professional, Inc. Implantable medical electrode contacts
EP1392391A4 (en) * 2001-05-07 2009-12-09 Cochlear Ltd Process for manufacturing electrically conductive components
WO2004091255A1 (en) * 2003-04-01 2004-10-21 Olympus Corporation Ultrasonic vibrator and its manufacturing method
US20050043627A1 (en) * 2003-07-17 2005-02-24 Angelsen Bjorn A.J. Curved ultrasound transducer arrays manufactured with planar technology
DE102006010009A1 (en) * 2006-03-04 2007-09-13 Intelligendt Systems & Services Gmbh & Co Kg A method for producing a ultrasonic probe having an ultrasonic transducer array having a curved transmitting and receiving face
JP4351229B2 (en) * 2006-06-28 2009-10-28 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Method of manufacturing the ultrasonic probe
CN101919079B (en) 2007-07-03 2014-01-01 皇家飞利浦电子股份有限公司 Thin film detector for presence detection
JP5453392B2 (en) * 2008-04-04 2014-03-26 マイクロソニック システムズ インク.Microsonic Systems Inc. Method and system for forming a high efficiency and a high uniform Fresnel lens arrays for ultrasonic liquid manipulation
US20100171395A1 (en) * 2008-10-24 2010-07-08 University Of Southern California Curved ultrasonic array transducers
US9812118B2 (en) 2014-07-15 2017-11-07 Garmin Switzerland Gmbh Marine multibeam sonar device
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Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474402A (en) * 1968-05-06 1969-10-21 Us Navy Variable focus electroacoustic transducer
US3496617A (en) * 1967-11-08 1970-02-24 Us Navy Technique for curving piezoelectric ceramics
US3587561A (en) * 1969-06-05 1971-06-28 Hoffmann La Roche Ultrasonic transducer assembly for biological monitoring
US3718898A (en) * 1971-12-13 1973-02-27 Us Navy Transducer
US4117074A (en) * 1976-08-30 1978-09-26 Tiersten Harry F Monolithic mosaic piezoelectric transducer utilizing trapped energy modes
GB1530783A (en) * 1976-01-30 1978-11-01 Emi Ltd Ultra-sonic pickup device
US4211949A (en) * 1978-11-08 1980-07-08 General Electric Company Wear plate for piezoelectric ultrasonic transducer arrays
US4211948A (en) * 1978-11-08 1980-07-08 General Electric Company Front surface matched piezoelectric ultrasonic transducer array with wide field of view
US4217684A (en) * 1979-04-16 1980-08-19 General Electric Company Fabrication of front surface matched ultrasonic transducer array
DE2926182A1 (en) * 1979-06-28 1981-01-22 Siemens Ag Ultrasonic transducer elements arrangement - sandwiches each element between matching and damping sections for coping with irregular surfaces subjected to scanning for defects
US4281550A (en) * 1979-12-17 1981-08-04 North American Philips Corporation Curved array of sequenced ultrasound transducers
US4344327A (en) * 1979-12-28 1982-08-17 Aloka Co., Ltd. Electronic scanning ultrasonic diagnostic system
US4381470A (en) * 1980-12-24 1983-04-26 Hewlett-Packard Company Stratified particle absorber
US4385255A (en) * 1979-11-02 1983-05-24 Yokogawa Electric Works, Ltd. Linear array ultrasonic transducer
US4404489A (en) * 1980-11-03 1983-09-13 Hewlett-Packard Company Acoustic transducer with flexible circuit board terminals
US4409982A (en) * 1980-10-20 1983-10-18 Picker Corporation Ultrasonic step scanning utilizing curvilinear transducer array
US4479069A (en) * 1981-11-12 1984-10-23 Hewlett-Packard Company Lead attachment for an acoustic transducer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5512254B2 (en) * 1973-07-03 1980-03-31
JPS54149615A (en) * 1978-05-17 1979-11-24 Oki Electric Ind Co Ltd Production of ultrasonic oscillator of curved arrangement type
JPS55134596A (en) * 1979-04-06 1980-10-20 Matsushita Electric Ind Co Ltd Manufacture of ultrasonic probe
JPS6032396B2 (en) * 1981-05-14 1985-07-27 Yokogawa Hokushin Electric
JPS59202058A (en) * 1983-05-02 1984-11-15 Hitachi Medical Corp Production of probe for ultrasonic inspection apparatus

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496617A (en) * 1967-11-08 1970-02-24 Us Navy Technique for curving piezoelectric ceramics
US3474402A (en) * 1968-05-06 1969-10-21 Us Navy Variable focus electroacoustic transducer
US3587561A (en) * 1969-06-05 1971-06-28 Hoffmann La Roche Ultrasonic transducer assembly for biological monitoring
US3718898A (en) * 1971-12-13 1973-02-27 Us Navy Transducer
GB1530783A (en) * 1976-01-30 1978-11-01 Emi Ltd Ultra-sonic pickup device
US4117074A (en) * 1976-08-30 1978-09-26 Tiersten Harry F Monolithic mosaic piezoelectric transducer utilizing trapped energy modes
US4211949A (en) * 1978-11-08 1980-07-08 General Electric Company Wear plate for piezoelectric ultrasonic transducer arrays
US4211948A (en) * 1978-11-08 1980-07-08 General Electric Company Front surface matched piezoelectric ultrasonic transducer array with wide field of view
US4217684A (en) * 1979-04-16 1980-08-19 General Electric Company Fabrication of front surface matched ultrasonic transducer array
DE2926182A1 (en) * 1979-06-28 1981-01-22 Siemens Ag Ultrasonic transducer elements arrangement - sandwiches each element between matching and damping sections for coping with irregular surfaces subjected to scanning for defects
US4385255A (en) * 1979-11-02 1983-05-24 Yokogawa Electric Works, Ltd. Linear array ultrasonic transducer
US4281550A (en) * 1979-12-17 1981-08-04 North American Philips Corporation Curved array of sequenced ultrasound transducers
US4344327A (en) * 1979-12-28 1982-08-17 Aloka Co., Ltd. Electronic scanning ultrasonic diagnostic system
US4344327B1 (en) * 1979-12-28 1994-05-03 Aloka Co Ltd Electronic scanning ultrasonic diagnostic system
US4409982A (en) * 1980-10-20 1983-10-18 Picker Corporation Ultrasonic step scanning utilizing curvilinear transducer array
US4404489A (en) * 1980-11-03 1983-09-13 Hewlett-Packard Company Acoustic transducer with flexible circuit board terminals
US4381470A (en) * 1980-12-24 1983-04-26 Hewlett-Packard Company Stratified particle absorber
US4479069A (en) * 1981-11-12 1984-10-23 Hewlett-Packard Company Lead attachment for an acoustic transducer

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Patents Abstracts of Japan, vol. 7, No. 36 (E 158), 1181 , 15th Feb. 1983; & JP A No. 57 188 195, (Yokogawa Denki Seisakusho K.K.). *
Patents Abstracts of Japan, vol. 7, No. 36 (E-158), [1181], 15th Feb. 1983; & JP-A No. 57 188 195, (Yokogawa Denki Seisakusho K.K.).
Patents Abstracts of Japan, vol. 9, No. 68 (P 344), 1791 , 28th of Mar. 1985, JP A No. 59 202 058 (Hitachi Medeiko K.K.). *
Patents Abstracts of Japan, vol. 9, No. 68 (P-344), [1791], 28th of Mar. 1985, JP-A No. 59 202 058 (Hitachi Medeiko K.K.).

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5030874A (en) * 1985-05-20 1991-07-09 Matsushita Electric Industrial Co., Ltd. Ultrasonic probe
US4800317A (en) * 1986-08-11 1989-01-24 Medasonics, Inc. Ultrasonic transducer method and apparatus
US5119801A (en) * 1988-02-04 1992-06-09 Dornier Medizintechnik Gmbh Piezoelectric shock wave generator
US5126616A (en) * 1989-09-05 1992-06-30 Pacesetter Infusion, Ltd. Ultrasonic transducer electrical interface assembly
US5689253A (en) * 1991-04-10 1997-11-18 Kinesis Corporation Ergonomic keyboard apparatus
US5673040A (en) * 1991-04-10 1997-09-30 Kinesis Corporation Ergonomic keyboard apparatus
US5610602A (en) * 1992-08-18 1997-03-11 Kinesis Corporation Keyboard and method for producing
US5792058A (en) * 1993-09-07 1998-08-11 Acuson Corporation Broadband phased array transducer with wide bandwidth, high sensitivity and reduced cross-talk and method for manufacture thereof
US5592730A (en) * 1994-07-29 1997-01-14 Hewlett-Packard Company Method for fabricating a Z-axis conductive backing layer for acoustic transducers using etched leadframes
US5685311A (en) * 1994-10-20 1997-11-11 Olympus Optical Company, Ltd. Image display system
US5711058A (en) * 1994-11-21 1998-01-27 General Electric Company Method for manufacturing transducer assembly with curved transducer array
US6100626A (en) * 1994-11-23 2000-08-08 General Electric Company System for connecting a transducer array to a coaxial cable in an ultrasound probe
US5834687A (en) * 1995-06-07 1998-11-10 Acuson Corporation Coupling of acoustic window and lens for medical ultrasound transducers
US5657295A (en) * 1995-11-29 1997-08-12 Acuson Corporation Ultrasonic transducer with adjustable elevational aperture and methods for using same
EP0853919A3 (en) * 1997-01-08 2001-05-09 Endosonics Corporation A high resolution intravascular ultrasound transducer assembly having a flexible substrate and method for manufacture thereof
US5984871A (en) * 1997-08-12 1999-11-16 Boston Scientific Technologies, Inc. Ultrasound transducer with extended focus
US5931684A (en) * 1997-09-19 1999-08-03 Hewlett-Packard Company Compact electrical connections for ultrasonic transducers
US5990598A (en) * 1997-09-23 1999-11-23 Hewlett-Packard Company Segment connections for multiple elevation transducers
US5977691A (en) * 1998-02-10 1999-11-02 Hewlett-Packard Company Element interconnections for multiple aperture transducers
US6057632A (en) * 1998-06-09 2000-05-02 Acuson Corporation Frequency and bandwidth controlled ultrasound transducer
US6894425B1 (en) * 1999-03-31 2005-05-17 Koninklijke Philips Electronics N.V. Two-dimensional ultrasound phased array transducer
US6155982A (en) * 1999-04-09 2000-12-05 Hunt; Thomas J Multiple sub-array transducer for improved data acquisition in ultrasonic imaging systems
US6563101B1 (en) 2000-01-19 2003-05-13 Barclay J. Tullis Non-rectilinear sensor arrays for tracking an image
US7795784B2 (en) * 2005-01-11 2010-09-14 Koninklijke Philips Electronics N.V. Redistribution interconnect for microbeamforming(s) and a medical ultrasound system
US20080106976A1 (en) * 2005-01-11 2008-05-08 Koninklijke Philips Electronics, N.V. Redistribution Interconnect for Microbeamforming(S) and a Medical Ultrasound System
US20070157732A1 (en) * 2006-01-06 2007-07-12 Warren Lee Transducer assembly with z-axis interconnect
US7622848B2 (en) * 2006-01-06 2009-11-24 General Electric Company Transducer assembly with z-axis interconnect
US20090095087A1 (en) * 2006-04-05 2009-04-16 Masaki Yamano Ultrasonic probe, ultrasonic flaw detection method, and ultrasonic flaw detection apparatus
US7874212B2 (en) * 2006-04-05 2011-01-25 Sumitomo Metal Industries, Ltd. Ultrasonic probe, ultrasonic flaw detection method, and ultrasonic flaw detection apparatus
US20100256488A1 (en) * 2007-09-27 2010-10-07 University Of Southern California High frequency ultrasonic convex array transducers and tissue imaging
USRE43485E1 (en) 2007-11-27 2012-06-26 Kinesis Corporation Keyboard
CN103211619A (en) * 2012-01-24 2013-07-24 株式会社东芝 Ultrasound probe and ultrasound diagnosis apparatus
CN103211619B (en) * 2012-01-24 2015-07-08 株式会社东芝 Ultrasound probe and ultrasound diagnosis apparatus

Also Published As

Publication number Publication date Type
EP0145429A2 (en) 1985-06-19 application
EP0145429A3 (en) 1986-08-13 application
EP0145429B1 (en) 1992-02-26 grant
DE3485521D1 (en) 1992-04-02 grant
US4734963A (en) 1988-04-05 grant

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